I really like this type of spring clips.
https://smile.amazon.com/Hongville-2...ateway&sr=8-96
If you shop around, you can get them for ~$.20 each. This is the 4th season for some of mine. They are FAST to put on and take off. They seldom break, but occasionally you do have to reshape the wire.
The only issue that I have is that the merchants want to sell you Large + Small Clips. The small ones are worthless for tomato plants, so you have to look a little harder to find just the large ones at a good price. Sometimes I've found it cheaper to buy the Large + Small and just dispose of the small ones. I probably have 100 of the large ones now, and maybe lose 2 or 3 per season.